Metal mold for casting ingots



March 1, 1938. s,l GR|FF|TH5 2,110,063

METAI v D FOR CASTING INGoTb f2 Sheets-Sheet l Filed NOV. 9, 1936 yad/4,5%@

. e Mge March 1,1938. s. H. GRlFFlTHs 2,110,063

METAL MOLD FOR CASTING INGOTS Il Filed Nov. 9, 1936 2 Sheets-Sheet 2 Patented Mar. 1, 1938 UNI'IED STATES PTENT OFFICE I 3 Claims.

This invention pertains to an improved and. novel metal mold for casting ingots and selfstripping the ingot therefrom, said mold lbeing so designed as to constitute two sections, an upper i major section and a lower! minor section, said sections being horizontally separated, each section being formed with integral means at their meeting ends that jointly and simultaneously coact with each other to cause the upper section J to be automatically guided and truly centered.

upon the upper face of the lower section, and to maintain the meeting face of the sections into true alinement between the shouldered portions thereof atA the point of juncture and to forma tight joint at the said point.

The main object of the invention is to provide an improved simple, novel, economical, practical and thoroughly eicien't self-stripping mold Vserving to produce a large end up ingot.

Another object of the invention is to so form and construct this two section mold that the inner Wall thereof will be inclined gradually from its top to its bottom p ortion in true alinement and of such dimensions as to produce an ingot having a smooth exterior surface that will effectually prevent the formation of a fin or fissure around its outer surface at the point of juncture of the two sections.

Another object of the invention is to so construct the two sections of the mold that the lower .section can be fixedly secured to any suitable or desirable support to prevent its movement away from said support when it is desired to lift the upper section carrying the ingot away from said lower section, and to permit the self centering of the two sections when placing the sections together in readiness for the casting operation.

Further objects of the invention are to so construct my improved sectional mold that it will dispense with the use of plugs of all kinds and types that have been heretofore employed for closing the open bottoms of the big end up mold and for pushing out the ingot from the mold: to dispense with inverted stripping of the mold; to eliminate the employment of costly plungers and other equipment heretofore employed for forcing the ingot out of the mold by the use of plugs to eliminate the use of all means heretofore utilized for fxedly securing the mold sections together at their point of juncture; to form a self-stripping mold, thereby saving time, labor, fuel and expense; to materially increase the qualty and value of the ingot product.

. The foregoing and such other objects as may appear from the ensuing description lare accomplished by the combination, location, arrangement .and construction of the several parts hereinafter more fully described, illustrated in the accompanying drawings, and particularly pointed out in the claims appended hereto, it being understood that slight changes in the precise shape, proportions, and minor details of the construction may be resortedv to without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings forming a part I of this specification, showing the type of mold involved for self-stripping the cast ingot ther..- from, it will be seen that:

Figure 1 vis a side elevation of the type of sectional mold embodied in my invention, showing means broken away and attached to a portion of the upper section for lifting it away from the lower section.

Figure 2 is a side elevation of the mold, showing means attached to the lower section and to the mold support for fixedly securing the lower section to said support. l

Figure 3 is a sectional elevation of the mold shown in Fig. 1 with the lifting means removed.

Figure 4 is an enlarged sectional view taken in the plane shown by dotted lines 4--4, Fig. 2.

Figure 5 is a side elevation of the large upper section of the mold, showing said section and its lifting means partly in section and partly in full lines with the projected concaved end of the ingot carried by the section seated upon its support.

Figure 6 is a side elevation similar to that shown in Fig. 5, showing the lower end of the upper mold section and the ingot seated upon the support with the upper end of the ingot projected above the upper end of the mold section, and in full lines the means clamped to the Y ingot for lifting it away from said section.

Figure 7 is an inverted plan of the upper section of the mold, and

Figure 8 is a plan of the lower section of the mold.

In the embodiment of my invention it will be seen that the numeral 2 designates the upper major section ofthe mold formed with integral laterally extended lugs 3 at its upper end portion for the reception of suitable detachable lifting means 4 for lifting and movingA the section away from contact with the lower minor section 5 of the mold, the lower end of said major section, at two opposite sides thereof, being provided with a continuous depending extension 6 vin alinement with its outer wall and formed at its Y l lowermost end with a horizontal seating face 1 and an upwardly and inwardly beveled portion 8 terminating-with `a vertical wall or shoulder 9 which terminates at the horizontally extending meeting face I of the section forming the point of juncture with the upper face of the minor section, as is clearly shown in Fig. 3 of the draw# ings, while the lower minor section is formed at its upper end with similar but upwardly extended integral formations II at opposite sides thereof in alinement with its outer wall and reversely beveled, as shown in Fig. 4, so that when it is desired to vjoin the sections together it is simply necessary to lower the upper section 2 until `its lower extended beveled end portions contact with the upper `and outer end portions of the minor section when by further lowering said upper section will be automatically guided to the point of juncture of the two sections into contact with each other, with the extensions 6 of the major section overlapping the outer wailof the upper end of the minor section at opposite sides thereof and the upward extensions I I of the minor section overlapping the lower outer walls of the upper section at its opposite. sides and above its meeting face as shown by the dotted lines in Figs. 1 and 2, while the vertical shouldered or wall portions of the extensions 6 and I I simultaneously serve to embrace and contact with the outer wall of the upper portion of the lower section and the outer wall of theupper section, respectively,v thereby maintaining the sections in proper relation to 'each other, thus causing the meeting faces of the sections which are preferably so machined as to form a true, accurate and tight juncture of the said meeting faces when joined together for the ingot casting operation.

Both of the mold sections are preferably formed of cast iron, andwhen united at the point of juncture the inner wall is inclined inwardly from thetop to the bottom thereof, terminating with .a concaved solid bottom, said formation being provided for the production of large end up ingots and for eliminating and dispensing with the use of all types of plugs and other expensive equipments heretofore employed in connection with molds for stripping the cast ingots I2 from their molds.

By the construction of my improved formation of large end up horizontally separated sectional mold the molten metal assures progressive solidication from the bottom to the top ofthe ingot; serves to prevent the formation of piping and blow holes on or near the surface which is essential to soundness and homogeneity; the production of ,a higher grade and quality of ingot possessing a smooth exterior surface, and adds to l the intrinsic value and quality of the rolled product produced from the ingot.

' It will also be readily perceived that by this specially designed type of kmold all means heretofore employed for securingand locking the sections together are entirely dispensed with, hence neither time nor labor is required for releasing and unlocking such fastening means, since the larger upper section 2 is simply lowered and is automatically guided by the coaction of all of the aforesaid beveled extensions until the meeting y faces truly and smoothly contact with and are held in their properly allned position by the vertically disposed shouldered or wall portions formed entirely around the mold at the point of juncture of the mold sections.

It will be seen that the lower minor section of the mold is provided with an excess of metal at jected lug I3 oppositely disposed for the reception of one end portion of an elongated metal link I4, said link being adapted to be swung over a fixed lateral extension I5, forming a part of the mold support I6 for the reception of the other end portion of the link, said link and extensions serving to maintain the'said minor section of the mold in fixed position with relation to the mold support, while the upper major section of the mold carrying the entire ingot is lifted and moved away from the lower minor section to another position and seated upon said moldvsupport I6.

While my special type of mold sections is shown as being substantially square in contour with rounded outside and inside corners in cross-section, it will be obvious that said sections may be of rectangular, oval, oblong, circular, or other desirable formation required to produce the shape of ingot that may better serve the purpose for which it is intended.

It will be readily evident that this particular construction of mold for casting ingots or slabs is adapted for use in connection with all kinds of molten metals, especially with relation to what is commonly known in the art as "rimming or effervescing steel, and that the several parts of the mold may be formed of any suitable or desirable dimensions best adapted for the purpose for which it may be utilized.

It is well known in the steel manufacturing art that ingot plants and foundries are equipped with 4 various movable types of lifting and conveying means, which may be readily engaged and disengaged'from the molds and ingots for transferring them from one place to another when desired. Hence, since the special construction of such equipment forms no part of this invention, it has not been deemed necessary to further illustrate and describe such equipment.

What I claim and desire to secure Patent is:

1. A metal mold for casting self-stripping ingots, comprising two sections, an upper major section and a minor lower section separated horizontally from each other, the major section havby Letters ing a downwardly extended portion at-its lower -1 per end portion entirely across said upper portion at opposite sides thereof, the minor section having an upwardly extended portion at the upper end thereof in alinement with its outer wall overlapping the outer wall of the upper section at its lower end at opposite sides thereof above its meeting face and entirely across itsouter face between its extended portions, said extended portions Yforming a continuous inner wall entirely arolind the meeting faces of' both sections of the mo 2. A metal mold for casting self-stripping ingots, comprising two sections, a major section and a` minor section horizontally separated from each other, the major section being formed with outer upper end wall of the minor section entire-. K

1y across two opposite sides thereof below the meeting faces of the mold, the minor section having upwardly extended portions at its upper end in alinement with its outer wall and overlapping the outer wall of the major section at its lower end at opposite sides entirely across its opposite sides between the depending portions 'thereof above the meeting faces of the mold, the minor section having a solid bottom with a concaved inner wall, the inner surface of the said depending portions and the upwardly extended portions being reversely beveled and formed with a vertically disposed shouldered portion or wall adapted to engage with. the outer walls of the said sections, all of the extended portions simultaneously coacting and serving to form a continuous vertically disposed inner wall around the meeting faces ofthe mold and to automatically guide, center and maintain the meeting face of the sections into true and accurate alinement at the point of juncture and to form a tight joint at said point.

3. A metal mold for casting self-stripping ingots, comprising two sections. an upper major section and a minor lower section separated horizontally from each other, the major section having a downwardly extended portion at its lower end below its meeting face at opposite sides thereof in alinement with its outer wall and overlapping the outer wall of the minor section at its upper end portion entirely across said upper portion at opposite sides thereof below the meeting faces of the mold, the minor section having an upwardly extended portion at the u'pper end thereof in alinement with its outer wall overlapping the outer wall of the upper section at its lower end at opposite sides thereof above its meeting face and entirely across its outer face 4 between its extended portions above the meeting faces of the mold, said minor section having a solid bottom with a concaved inner wail, a support for the mold disposed below said sections, means for xedly securing the minor section to said support, consisting of two projected formations oppositely disposed near the bottom of said minor section for the reception of one end of an elongated link, and a fixed member disposed at opposite sides of the support for the reception of the other end of the link, so that the link may be readily swung over the said fixed members, thereby fixedly securing the minor section to the support.v

SEPTIMUS H. GRIFFI'I'HS.y 

